cooke



(No ModeL) 2 Sheets-Sheet 1.

E. W. 000KB.

STEAM VALVE. No. 379,684. Patented Mar. 20, 1888.

1 1' .1, e 1 H g a c g I' Bgl Fig. i.

Witnesses: nven ur: W WW 7 g Maw.

ATTORNEY.

N. PEYERS. Phumuuw n hur. wnmngim D. C.

(No Model.) 2 SheetsSheet 2.

E. W. 000KB.

I STEAM VALVE.

No. 379,684. Patented Mar. 20, 1888.

Witnesses Inventur:

WI W MM flaw/g M w.

ATTORN EY.

NITED STATES PATENT OFFICE.

ERNEST WM. COOKE, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO IV. D. EATON AND CHAS. D. HAUK, BOTH OF SAME PLAOE.

STEAM -VALVE.

SPECIFICATION forming part of Letters Patent No. 379,684, dated March 2 1888- Application filed September 7. I887. Serial No. 249,054.

To aZZ whom it may concern.-

Be it known that I, ERNEST WM. COOKE, a citizen of the United States, residing in Ohicago, in the county of Cook and State of Illinois, have invented a new and useful Improve ment in Steam-Valves, of which the following is a specification.

My invention relates to steamvalves in whicha cutoffplugisintroduced in the stem of the valve to close the port when the valvehead is removed; and my object is to provide a steam-valve (which is applicable as a water or oil valve) that may be removed from a boiler or tank without injury to the person or allowing ofthe escape of steam or other contents of the tank. I attain this object through the mechanism shown in the accompanying drawings, in which- Figure l is a sectional View of a test-cock with the valve attached. Fig. 2 is an end and side view of the valve-plug. Fig. 3 is a side and end view of the boiler-plug of the valve. Fig. 4 is a side and end view of thevalve-seat. Fig. 5 is a sectional view of the boiler-plug and valve-scat, showing the valve-plug in its seat and the valve closed. Fig. 6 is aseetional view of the bushing used with a globe-valve. Fig. 7 is a view of the boiler-plug, valve-seat, bushing. and globe-valve, all united.

Similar letters refer to similar parts through out the several views.

I make a boiler-plug, O, with a thread cut on the shaft to screw it into the boiler or othervessel. The outer edge of this boiler-plug G p is hexagonal on the outside to allow of its being screwed up with a wrench. The outer end of the plug 0 is also provided with a screwthread, into which fits the valve-plug B. The

center of the boiler-plug G is made of a smaller diameter than the valve-plug B. The valveplug B has on the outer side a hexagonal shape and on the inner side is divided into two chambers, B and G, with a restrictingcollar in the central portion, H. The chamber B connects the valve-plug B with the valve A.

The chamber G is expanded so as to contain the head of the valve E and allow of free motion or play of the valve E, which moves laterally in the embrace of the collar H of the (No model.)

valve-plug B. The valve E is a cylindrical piece of metal perforated horizontally nearly to the extreme end, and so forminga cap with an expanded head, g, which is beveled and ground so as to exactly fit the edges of the valve-seat a in the collar H of the valve-plug B. In the sides of the shaft of the valve E, at right angles and some little distance removed from the head g, are four holes, F, communicating with the central chamber in the valve E. The extreme outer end of the valve E has a notch, I), cut into it by cutting away one-half of the cylinder to any desired depth. This notch I) is made to exactly fit a corresponding notch, e, in the stem of the valve A.

When circumstances require it, I use a bushing, D, to connect the valve A with the valveplug B, making in the end fitting into the valve-plug B the notch c.

Having thus described the parts of my invention, I now proceed to explain the manner of operating the same.

I screw the boiler-plug O and the valve-plug B tightly together, first having placed the valve E in the collar II of the valve-plug B. I then make the attachment with the boiler by screwing the boiler-plug O and valve-plug B into a boiler, and the pressure of steam or water or other contents of the boiler presses upon the cap 9 of the valve E and drives it into the valve-seat a, forcing the holes F into the collar H, and so shutting them off. Thus much forms the valve-socket, and is perfectly secure and cannot leak if the Work is well made. To the end of the valveplug B, Inow screw the valve A, the end of which is slotted at e, to correspond with the socket or notch b of the Valve E, and when the end of the valve A has come in contact with the notch b of the valve E the valve E is pushed back and opens the stcamway through the holes F as it recedes, so that when the valve Ais firm in the socket the valve E has receded sufficiently far to open the holes F and allow of a free steamway into the valve A. When the valve A is removed, the valveE follows the end of the stem and closes till the holes F have passed the collar H,when the steam is shut off and the force of the steam or liquid in the boiler forces the valve E into the seat a.

When the nature of the case admits of it, I use, in connection with the valve-plug B, a bushing, D, having a thread at each end and a notch, e, on the end D for opening and closing the valve E.

I am aware that prior to my invention valves have been used with a moving plug, and I do nottherefore claim the broad principle of a steam-valve; but

What I do claim. and desire to secure by Letters Patent of the United States, is-

1. As a new article of manufacture, a steamvalve consisting of the valve A, socket or notch e, the valve-plug B, chamber B, collar H, valve-seat a, chamber G, the valve E, cap and beveled edge 9, holes F, and the boilerplug 0, all substantially as and for the purpose set forth and described.

2. As a new article of manufacture, astcamvalve consisting of the valve A, bushing D, notch e, "alve-plug B, chamber B, collar H. valve-seat a, chamber G, the valve E, cap and beveled edge holes F, and the boiler-plug 0, all arranged and operating substantially as set forth and described.

3. In a steam or other valve, the combination of the valve Aand notch 6, combined with the valve E, holes 1;, andnotch b, all substantially as set forth and described.

4. In a steam or other valve, the combination of the valve A, notch e, the valve E, holes F, and notch b, combined with the plug B, collar H, valve-seat a, chamber G, chamber B, and the boiler-plug 0, all operating and arranged substantially as set forth.

5. In a steam or other valve, the combination of the valve A, the bushing D, notch e, the valve E, holes F, and notch b, combined with the plug B, collar H,valveseat a, chamber G, cap 9, chamber B, and the boiler-plug 0, all operating and arranged substantially as set forth.

. v ERNEST WM. COOKE. In presence of H. HAUPT, J r.,

L. M. PAGE. 

